198574548980 has 18 divisors (see below), whose sum is σ = 417010737906. Its totient is φ = 79429022448.

The previous prime is 198574548971. The next prime is 198574548983. The reversal of 198574548980 is 89845475891.

It can be written as a sum of positive squares in only one way, i.e., 158859639184 + 39714909796 = 398572^2 + 199286^2 .

It is a super-2 number, since 2×198574548980² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198574548980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198574548983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1943039 + ... + 2042681.

It is an arithmetic number, because the mean of its divisors is an integer number (23167263217).

Almost surely, 2^198574548980 is an apocalyptic number.

198574548980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198574548980 is an abundant number, since it is smaller than the sum of its proper divisors (218436188926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198574548980 is an frugal number, since it uses more digits than its factorization.

198574548980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199295 (or 99650 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 68.

The spelling of 198574548980 in words is "one hundred ninety-eight billion, five hundred seventy-four million, five hundred forty-eight thousand, nine hundred eighty".